13004409 has 8 divisors (see below), whose sum is σ = 18915552. Its totient is φ = 7881440.

The previous prime is 13004393. The next prime is 13004449. The reversal of 13004409 is 90440031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13004409 - 2⁴ = 13004393 is a prime.

It is a super-2 number, since 2×13004409² = 338229306878562, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13004449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197004 + ... + 197069.

It is an arithmetic number, because the mean of its divisors is an integer number (2364444).

Almost surely, 2^13004409 is an apocalyptic number.

It is an amenable number.

13004409 is a deficient number, since it is larger than the sum of its proper divisors (5911143).

13004409 is a wasteful number, since it uses less digits than its factorization.

13004409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394087.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 13004409 is about 3606.1626419229. The cubic root of 13004409 is about 235.1600479076.

The spelling of 13004409 in words is "thirteen million, four thousand, four hundred nine".